I just thought of another thing to add to my list.
The IBL lights in Poser are cool, but all the others suck. I mean,  just archaic and unreliable. Plus, I swear, sometimes they don't load properly from a saved scene.

Oh and while I'm at it, the way the lights look in the OpenGL preview is usually nowhere near what you're going to see when you hit Render. THAT would be a huge thing if they could fix that - give us better light previews and better lights.

I don't know what constitutes a "better" light from a programming standpoint, but all the other 3D apps I've used have "better" lights, so I know it can be done. ;-)